Reaction Rates and Collision Theory

Which of the following will increase the proportion of successful collisions?

• Increasing the temperature

• Increasing the pressure

• Increasing the concentration

Tags

NGSS.HS-PS1-5

What piece of apparatus could be used to measure the volume of gas produced in a reaction

• Gas syringe

• Beaker

• Top pan balance

Which of the following is a possible unit for rate of reaction?

• cm³/s

• m/s

• N

Tags

NGSS.HS-PS1-5

Which of the following statements about catalysts is false?

• They speed up reactions

• They provide an alternative reaction pathway with a lower activation energy

• They become chemically changed at the end of the reaction

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-4

Which of the following would give a steeper curve on a graph of volume of gas against time?

• Low temperature

• Low concentration

• Using a catalyst

Tags

NGSS.HS-PS1-5

What is the effect of decreasing the pressure on the following equilibrium 2NO(g) + O₂(g) ⇌ 2NO₂(g)?

• Less NO₂ will be produced

• Less NO and O₂ is formed

• No change will occur

What effect on the equilibrium position is produced by adding a catalyst to a system in equilibrium?

• It decreases the yield of product

• It increases the yield of products

• It has no effect

What term is used to describe a chemical reaction in which the forward and reverse reaction rates are the same?

• A static equilibrium

• An equal equilibrium

• A dynamic equilibrium

Tags

NGSS.HS-PS1-5

Increase in temperature of the reactants can do one of the following

• Slow collision frequency

• Allow less effective collision between the particles

• Cause particles to lose speed

• Increase collision between the particles thus increasing the rate.

Tags

NGSS.HS-PS1-5

Which factors increase the rate of a reaction.

• increasing temperature

• increasing concentration

• increasing surface area

• all of these

Tags

NGSS.HS-PS1-5